Prospective study of Centurion versus Infiniti phacoemulsification systems: surgical and visual outcomes.

Aim: To evaluate surgical outcomes (SOs) and visual outcomes (VOs) in cataract surgery comparing the Centurion phacoemulsification system (CPS) with the Infiniti phacoemulsification system (IPS).

Methods: Prospective, consecutive study in a single-site private practice. Totally 412 patients undergoing cataract surgery with either the CPS using the 30-degree balanced tip (=207) or the IPS using the 30-degree Kelman tip (=205). Intraoperative and postoperative outcomes were documented prospectively up to one month follow-up. Nuclear sclerosis (NS) grade, cumulated dissipated energy (CDE), preoperative corrected distance visual acuity (CDVA), and CDVA at one month were recorded.

Results: CDE was 13.50% less in the whole CPS compared with the whole IPS subcohort. In eyes with NS grade III or greater, CDE was 28.87% less with CPS (=70) compared with IPS (=44) (=0.010). Surgical complications were not statistically different between the two subcohorts (=0.083), but in the one case of vitreous loss using the CPS, CDVA of 6/4 was achieved at one month. The mean CDVAs (VOs) at one month for NS grade III and above cataracts were -0.17 logMAR (6/4.5) in the CPS and -0.15 logMAR (6/4.5) in the IPS subcohort respectively (=0.033).

Conclusion: CDE is 28.87% less, and VOs are significantly improved, in denser cataracts in the CPS compared with the IPS. The authors recommend the CPS for cases with denser nuclei.